Originally Posted by thenotsogoodtrickster
So... are they zombies or something?
Did you even watch the videos? They explain what they are and how they are different from typical zombies.
It's a fungas that grows into the brain and blinds the person and eventually destroys their consciousness. They navigate by making clicking sounds like some blind people are able to do. What's creepy is the fungas/infection is based on a real fungas that targets ants. Also they kill you with one bite.
The game doesn't revolve around the infected though. They're just there to provide context and help the player understand how society got to where it is.